Entitled ‘Mount Wittenberg Orca’, the joint studio effort features tracks originally written for a New York benefit concert they did together in 2009.

Recorded at the Rare Book Room in Brooklyn with Nicolas Vernhes, all proceeds from the release will go to help marine conservation.

“We’ve decided to give away all the money that ‘Mount Wittenberg Orca’ generates to the project of creating international marine protected areas,” Dirty Projectors‘ David Longstreth said in statement to Stereogum.com. “Only one per cent of the oceans are protected in any way and this is a huge problem.”

He added: “We’re working with the National Geographic Society to create areas of sustainability, so the oceans don’t end up like a giant poisonous corpse hugging the continents.”

Available exclusively via Topspin.net, pre-orders for ‘Mount Wittenberg Orca’ are being taken with donations starting at $7.